Handcuff



P. KRUGER.

HANDCUFF. APPLICATION FILED JUNE 2 8.1919.

Patented 11116 1 UNITED STATES PAFTENTOFFICE.

PAUL IKRUGER, OF CHARLESTON, WEST VIRGINIA..

HAN'DCUFF.

To all whom it may concern:

Be it known that I, PAUL KRUGER, a citizen of the United States, and a resident of Charleston, Kanawha county, and State of lVest'Virginia, have invented certain new and useful Improvements in Handcuffs, of which the following is a specification.

The object of my invention is to provide a handcuff of such construction that it does not require a key to lock it and unlock it; in fact, cannot be locked and unlocked by means of a key or similar implement, but the locking and unlocking are under the control of a combination lock which can only be 0perated by a person who knows the combination.

The insecurity of handcuffs such as are commonly used, lies partly in the easy manner in which a duplicate key or a false key can be obtained and used in freeing the wrists of the handcuffed persons.

One great advantage of my invention is found in the fact that while it is quite possible to steal a handcufi' key from a keeper or policeman, it is impossible to steal the Various types of combination locks may.

be adopted according to the size of the handcuffs, and the location of the locking and releasing means without departing from my invention.

One form of my combination lock handcuff, is shown in the accompanying drawings in which:

Figure 1 is a plan partly in section with the front plate removed, and showing the handcuffs locked.

Fig. 2 is an end view of the upper portion of Fig. 1, with the plate in place.

Fig. 3 is a vertical cross-section on plane of line 3, 3 of Fig. 1.

Fig. 4 is an enlarged vertical cross-section on plane of line 4, 4 of Fig. 1.

. lines in Fig. 1.

Specification of Letters Patent. P t t June 1, Application filed June 28, 1919. SerialNo. 307,348. 1

Fig. 5 is an enlarged elevation of one of the tumblers of the combination lock.

Fig. 6 is a horizontal cross-section on plane of line 6, 6 of Fig; 5. 1

Same letters indicate similar parts in the different figures. 'i

A is the body of the handcufl, which is preferably made hollow to receive the looking and releasing device. This body is preferably provided with a plate or cover, B, (Fig. 2,) which is only to be removed when something is wrong with the interior mechanism. Obviously the cover is riveted or otherwise secured in place, so that it cannot be tampered with.

Projecting from the body portion A, are the half cuff portions O-which are prefer ably made integg'al with the body portion A, as it is S111 cient to have only half of the entire cuffo oenable as shown in dotted he swinging half of each cuff D is pivoted by a rivet d, to what may be called fixed portion of the cuff, and around this pivot this half swings between the closed or locked position shown in full lines in Fig. 1, and the opened position shown in dotted lines in said figure. In fact the swing is much longer than as shown in dotted lines as may be readily understood, so that the wrists may easily pass through the opening thus made. That part of the swinging portion D, which is designed to enter and be held inside the body portion A is preferably provided withnotches ewhich are engaged by the pawls E inside said body portion. These pawls are pivoted inside the body portion A as it f, and are normally held in their spread or engaging position by the spring F. A number of notches is provided to provide differently adjusted openings when the links are looked, as occasion may require.

G, is the operating pin of a combination look by which the displacement of the pawls E for looking or releasing the cuffs is effected. This combination look as shown, is of the three tumbler type. The structure of these tumblers H with their pins h and recesses z', (seeFigs. 4, 5 and 6) are of any usual and convenient construction; and it would be readily understood that byturning the pin G around the dial 1, in accordance with the combination for which this look isset, a point is finally reached, when the three tumblers are so related to eachother, that the pin is free to be pushed inwardly. This displaces the two pawls E into the position shown in dottedlinesio Fig. 1, thus releasing the notched cuff portions D and permitting the cuffs to be' opened.

A coiled "spring :j, surrounding the stem G,

normally keeps the pin inoutward posi-i tion by the resilient force ofthe'spring.

The operation of my improved handcuff is extremely simple It consists simply in combination has to be set up and the pin pushed inwardly, with sufficient force to displace the pawls. V

I'claim: a Y a A hand-cuff which comprises a centrol body portion, containing a combination lock and fastening'means adapted to be locked and unlocked thereby ;-and a pairof jointed sleeves, one portion of which isrrigidly seoured to said body portion and the other portionof' which is swingingly pTivotedto said rigid. portion said fastening means comprising a pair'ofspring-controlled locking fingers and a barbed, sliding pin-con trolled by said combination lockand adapt ed to operate said locking fingers torelease said sleeves when occasionrequires.

PAUL KRUGERI Witnesses:

A. J; CURRY, C. E.' FONTAINE. 

